General Description

The 849S625 is a high frequency clock generator. The 849S625

uses an external 25MHz crystal to synthesize 625MHz, 312.5MHz,

156.25MHz and 125MHz clocks. The 849S625 has excellent

cycle-to-cycle and RMS phase jitter performance.

The 849S625 operates at full 3.3V supply mode and is available in a

fully RoHS compliant 48-lead TQFP, E-Pad package.

Features

• Ten selectable differential LVPECL or LVDS outputs

• Output frequencies of 625MHz, 312.5MHz, 156.25MHz or

125MHz using a 25MHz crystal.

• Crystal interface designed for a 25MHz, parallel resonant crystal

• Cycle-to-cycle jitter: 25ps (maximum)

• RMS phase jitter at 156.25MHz (1MHz - 20MHz):

0.375ps (typical), LVDS outputs

• Output duty cycle: 53 (maximum)

• Full 3.3V supply mode

• -40°C to 85°C ambient operating temperature

• Available in lead-free (RoHS 6) packaging